Henceforth, language studies were no longer directed merely towards correcting grammar.
The critical principle demanded an examination, for instance, of the contribution of different periods, thus to some extent embarking on historical linguistics.
In general, the philological movement opened up countless sources relevant to linguistic issues, treating them in quite a different spirit from traditional grammar; for instance, the study of inscriptions and their language. But not yet in the spirit of linguistics.
A linguistic system is a series of differences of sound combined with a series of differences of ideas.
It is one of the aims of linguistics to define itself, to recognise what belongs within its domain. In those cases where it relies upon psychology, it will do so indirectly, remaining independent.
Within speech, words are subject to a kind of relation that is independent of the first and based on their linkage: these are syntagmatic relations, of which I have spoken.
Everyone, left to his own devices, forms an idea about what goes on in language which is very far from the truth.
The very special place that a language occupies among institutions is undeniable, but there is much more to be said-, a comparison would tend rather to bring out the differences.
Whitney wanted to eradicate the idea that in the case of a language we are dealing with a natural faculty; in fact, social institutions stand opposed to natural institutions.
Linguistics will have to recognise laws operating universally in language, and in a strictly rational manner, separating general phenomena from those restricted to one branch of languages or another.